From 77180546c84278f8e613aa912e432ee084425f88 Mon Sep 17 00:00:00 2001 From: Uwe Hermann Date: Thu, 28 Oct 2010 08:19:22 +0000 Subject: Add IOAPIC support for Intel 82371EB and fixup SMP on ASUS P2B-D. - Add enable_intel_82093aa_ioapic() which enables IOAPIC usage in the Intel 82371EB southbridge (sets the proper chip-select) and sets an IOAPIC ID. - We only call enable_intel_82093aa_ioapic() if a board does "select IOAPIC" as on 82371EB-based boards the IOAPIC is an external chip (not integrated in the southbridge) and it's only populated on multi-CPU boards. That is, we cannot unconditionally enable it, only on SMP-capable boards. - Due to the reason explained above, remove "select IOAPIC" from src/southbridge/intel/i82371eb/Kconfig, and add it to src/mainboard/asus/p2b-d/Kconfig. - Also set CONFIG_MAX_PHYSICAL_CPUS to 2 on ASUS P2B-D. There are two CPU sockets (Slot 1) and each CPU can only have one core, multi-core CPUs didn't exist in that era (CONFIG_MAX_CPUS was set to 2 already). - Drop useless/duplicated enable_lapic() call from ASUS P2B-D's romstage.c, that function is always called if either CONFIG_SMP and/or CONFIG_IOAPIC are set. - Rework ASUS P2B-D mptable.c to fix a number of things: - Convert it to use mptable_write_buses() as all mptable.c files should do. - Fix incorrect IOAPICID (it's 0x11 for the external 82093AA IOAPIC). - Fix a bunch of hardcoded bus IDs, remove incorrect entries, etc. This is build-tested on ASUS P2B-D, and also boot-tested successfully there. On Linux I now get two entries in /proc/cpuinfo (where only one appeared before this patch), i.e. both populated CPUs are found. Signed-off-by: Uwe Hermann Acked-by: Uwe Hermann git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5998 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/mainboard/asus/p2b-d/Kconfig | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'src/mainboard/asus/p2b-d/Kconfig') diff --git a/src/mainboard/asus/p2b-d/Kconfig b/src/mainboard/asus/p2b-d/Kconfig index 2643686ba4..cb9a69a7d3 100644 --- a/src/mainboard/asus/p2b-d/Kconfig +++ b/src/mainboard/asus/p2b-d/Kconfig @@ -28,6 +28,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy select HAVE_PIRQ_TABLE select HAVE_MP_TABLE select SMP + select IOAPIC select UDELAY_TSC select BOARD_ROMSIZE_KB_256 select SDRAMPWR_4DIMM @@ -48,4 +49,8 @@ config MAX_CPUS int default 2 +config MAX_PHYSICAL_CPUS + int + default 2 + endif # BOARD_ASUS_P2B_D -- cgit v1.2.3